Study the effect of LPG injection parameters on the performance and emission for dual fuel (Diesel-LPG) diesel engine
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giangnvl@hcmute.edu.vnKeywords:
Dual fuel, Fuel consumption, Engine, LPGAbstract
This paper presents the effect of LPG injection control parameters on performance and emission for dual fuel diesel. The engine has been modified to determine the best LPG com- position (ratio) for dual fuels to improve the emission quality while maintaining high thermal efficiency in comparison with the conventional diesel engine. A LPG electronic injection system controls the flow of liquefied petroleum gas (LPG) to manifold has been designed and manufac- tured for the above mentioned purpose.
The experimental results have been obtained on various Diesel-LPG modes at different loads at constant speed (1500 rpm). Compared to 100% Diesel at full load, the optimum value of Brake Thermal Efficiency (BTE) and Brake Specific Fuel Consumption (BSFC) were observed to improve by 31% with (68%-32%) Diesel-LPG mode. Exhaust gas emissions; namely NOX, CO2 and Smoke reduced by 30%, 48% and 29% at full load respectively with the use of (68%-32%) Diesel-LPG mode. After scrutinizing the results, a Dual fuel Diesel - LPG controller was developed for optimizing the performance on different operat- ing conditions. With Diesel - LPG controller, it was possible to maximize fuel economy along with minimizing emission pollutants.
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